Paper-machine drier



Feb. 4, n l 930.

W. H. MILLSPAUGH PAPER MACHINE DRIER' Original Filed Dec. '7. 1922 @www 4@ i ww ,Agp n a, y Q 1 ,Q ,QN ,Nwowm Patented Feb. 4, 193() PATENr-OFFICE WLLIAM H. MILLSPAUGH, OF SANDUSKY, OHIO, ASSIGNOR TO THE PAPER AND TEX- j i TILE MACHINERY COMPANY, OF SANDUSKY, OHIO, A CORPORATION OE OHIOz PAPER-MACHINE DRIER Original application filed December 7, 1922, Serial No. 605,379. Divided and this application' led March 10,

1925. sriaiNo. 14,407. A

Thisinvention is intended to provide .an improved paper drying apparatus `of the class comprising rotating heated drumsor cylinders in contact with which the web to be. dried is carried.

The invention will beunderstood by ref-v erence to an illustrative embodiment thereof shown in the annexed drawings. In said drawings: f y Fig. lis a diagrammatic side vievs7 of one vpracticable formof'drying apparatus conf taining an embodiment of-the invention; v

Fig. 2 isa detail view showing in elevation one end of a. drying cylinder and its journal mount; l

Fig. 3 is al sectional elevation of a cylinder mounting, viewed endwise of the cylinder journal; and

Fig. 4 is an enlarged cross section taken on the line 4--4 of Fig. 2. 1

The apparatus selected for illustration comprises a sel'J of drying cylinders, 1 to '13 inclusive, arranged in this instance in two tiers, those of the upper tier rotating inone direction and those Aof the lower tier'rotating inthe opposite direction, so that the web of paper material 14 running through the apparatus may travelv alternately in contact.

with thecylinders of the upper and lower* tiers. For instance, in the particular arrangement illustrated, the web 14 may pass over the first cylinder 1 and then under and in contact withy the lower half of the second f bearings for -t cylinder'Q and then over and in Contact with `the upper half oi' the next cylinder 3 andso on alternately in contact with the upper and lower cylinders until the Web passes from the last drying cylinder 13 to the calendering rolls 15 beyondthe drier. y

The drying cylinders are anti-frictionally mounted in such manner as to permit them to be easily rotated by irictionallyk operating uieansas hereinafter explained. One prac-k ticable type ofcylinder mount for lthis purlpose-is shown in Figs. 3 and 4. As shown, Ithe cylinder journal 16 bears upon and 1s supported by a Apair of large 'rollers 17 and 18 which are anti-frictionally mounted on* short stationar shafts 19. The anti-friction itiese rollers, comprising concentric race rings 20 and 21 and interposed balls or rolling elements 22, all of hardened steel, are contained and housed in the journal supporting rollers, the outer race rings being secured therein and the inner 'race ringsbeing secured on the shafts 19. Lubrication may be. supplied' to the anti-friction bearings through passages 23 inthe shafts communicating with the'chambers of the rollers in which the ball bearinggdevices are contained.

-A film of oil origrease may be maintained between the contacting surfaces of the cylinder journalv and journal supporting rollersvby any appropriate means.

`porting rollers 17 and 18 are carried by al support or saddle 24 havin -walls enclosing the lrollers and aifording su stantial seats 25 for the roller lshafts immediately adjacent the end faces of the rollers. This support, which is mounted on the machine side rail 2 6 (Fig. 2) may be slightly rounded on itsv bottom and maybe provided with a central hole 27 to pivotally engage a stud on the supporting rail, in order that the support may be self-adjusting to align the anti-frictionally mounted journal supporting rollers 17 and 18 with the journal. AIn this instance saidv support 24 is shown constructed to provide la journal box receiving the cylinder ,journal Y struction illustrated,V the annular ball bearing devices on which the rollers 17 and 18 are mounted are substantially removed from and protectedy by the thick walls of the rollers Thev journal sup- .9o l bearing structure. VWith'thespeciic confrom contact with' the heated journals; while` urthermore such short shafts may be employed so as to 'reduce shaft iexing under load to a minimum, and such flexing as may occur will be substantially immaterial. since it Will not tend to set up crystallization such as Would accompany the ieXing of a rotating load sustaining shaft.

Assuming that the several drying cylin' ders are anti-frictionally mounted either on bearings of the specific character illustrated or of other construction of the same general character or appropriate for the purpose, a comparatively7 slight expenditure of power ivill be required to set the cylinders in rotation, land in the operation of the paper Ama-v ,chine the Web of material passing through the machine may be utilized for driving purposes or to assist in the driving of the cylinders.

Y said sheaves being represented in this 1nstance as constructed or provided as a part of the cylinders themselves. The endlessrope 3() engages a number of guiding rollers 32 and one or more adjustable take-up rollers 33 for tightening or slackening the rope as required.

The endless rope or belt 30 may be convenjiently driven by appropriate means, for instance by applying power to any selected cylinder or cylinders of the series engaged by the rope. In the particular construction shown in Fig. 1, the last tivo cylinders 12 and 13 are connected by a crossed belt 35 and t-he cylinder l2 is driven by a belt 36. Said belt mayv be driven from the same shaft (not shown) which drivesl the calendering rolls, the latter being operated synchronously with the cylinders and typifying a means'for pulling the web from the cylinders.

The entire set of drying cylinders engaged by the endless rope or belt may be driven through application of power to the cylinders 12 and 13 or other selected cylinder or cylinders engaged by the rope, inasmuch as the anti-frictional mounting of the 'cylinf ders renders them immediately responsive to the travel of the rope in vfrictional engagement with said cylinders or the sheaves With which the respective cylinders are equipped.

The tension of the rope may be regulated or adjusted so that after the machine is 1n opsration there may be a slight permissible slippage of the rope on the cylinders to enable the cylinders to respond in speed to speed fluctuations in the web due to shrinkage or changes in temperature and moisture conditions as the drying progresses. If felts should be employed to carry the paper sheet or web in contact with the cylinders, then .the power is applied, would serve as driving means for the remaining cylinders; and in such c ase the rope could be utilizedias a supplemental driving agency. However, the rope drive is' contemplated more especially for use in apparatus such as illustrated in which the drying cylinders are unequipped with felts or the like and are intended for drying material such for instanceas paper board or other sufficiently heavy or strong material which will not require felts or other means for carrying the Web around thegcylinders. In drying a web of such character, the rope 30 may be depended upon to start all the drying cylinders in motion and to run the cylinders until the web is threaded through the machine. After the web is once through the machine-and passing through the reel or through the calenderingV rolls before the reel, the web itself may be utilized to drive the drying cylinders, and the cylinders will be driven with such-variations in speed of the individual cylinders as to allow for shrinkage or changes in condition of the board, this being permitted by slight slippage of the endless belt or rope in contact with the cylindersheaves or pulleys. When drivin the cylinders by the web itself, under the p'u l of the calenders or other apparatus beyond the drier, the power may be disconnected from the cylinders 12 and 13 or may be eontinued'to allow utilization of the rope to assist in the drive.

It Will be observed that the'present invention contemplates elimination of the elaborateand expensive train of intermeshing gears which have heretofore been employed for -driving the cylinders of paper machine driers, such driving gears being omitted from the illustrative apparatus; and furthermore contemplates operation of vthe'apparatus in such manner that the drying cylinders may step up orv down in speed as controlled by the shrinkage or changes in condition of the web instead of being positively gear-driven at speeds more or less lunequal with the speed of the web; it being understood ofcourse that the speed of the web is necessarily affected by shrinkage and changes in conditions as it passes through the drier.

A gearless driven paper machine drier was disclosed and broadly claimedv in a prior application filed by the present inventor Dei cember 7, 1922, Ser. No. 605,379, of which the present application is'a division; this application being directed to subject matter not specifically claimed per se in the .afore-v said parent application.

What I claim is:

1. In a paper drying apparatus, a rotatable drying cylinder having a sheave; nonbinding cylinder bearings comprising com f frictionally engaging the same, and driving .with said sheave.

paratively large journal-supporting rollers; and anti-friction bearings on which said rollers are mounted; whereby the cylinder lmay be easily 'rotated with light application of power by the passage of means in contact .2. An apparatus of the class described comprising, in combination, anti-frictionally .journalled drying cylinders adapted to be driven ybythe entrained web undergoing drying action; and cylinder driving means constructed and arranged to permit driving of the cylinders by the web independently of said driving means.

3. An apparatus of the class described comprising, in combination, anti-frictionally journalled drying cylinders driven by an entrained web, and Web-pulling means beyond the cylinders from which the cylinders are indirectly driven through such vWeb L The combination with a paper-making machine drier unit, of a plurality of drier cylinders, driving means connected to drive 'certain of said cylinders, and coacting fric-v tionl mechanisms on all of said cylinders to permit the cylinders to receive a drive from said driving means. 4

' 5. A paper-machine drier unit comprising a series ofA drying cylinders with grooved sheaves and a driving rope frictionally en.-v

gaging said sheaves, driving means connected l to drive certain of said cylinders, the other said cylinders being antifrictionally mounted and indirectly driven from said means through said rope.

6. A paper-machine drier unit comprising a series of antifrictionally mounted drying cylinders adapted to be driven by the entrained Web undergoing drying action, said Web or by the sai cylinders having grooved sheaves and a rope means `connected, to drive certain of said cylinders, the constructionand arrangement permitting'drivin@ of the cylinders by the d driving means and rope.

In testimony whereof, I name to this specification.

` WILLIAM H. MILLSPAU GH.

have signed lmy I 

